Notebook Structure

# Notebook Structure Jupyter notebooks are JSON documents with this high-level shape: - `nbformat` and `nbformat_minor` - `metadata` - `cells` (a list of markdown and code cells) When editing `.ipynb` files programmatically: - Preserve `nbformat` and `nbformat_minor` from the template. - Keep `cells` as an ordered list; do not reorder unless intentional. - For code cells, set `execution_count` to `null` when unknown. - For code cells, set `outputs` to an empty list when scaffolding. - For markdown cells, keep `cell_type="markdown"` and `metadata={}`. Prefer scaffolding from the bundled templates or `new_notebook.py` (for example, `$CODEX_HOME/skills/jupyter-notebook/scripts/new_notebook.py`) instead of hand-authoring raw notebook JSON.